KOKUSAI DENKI Electric Inc. — two prefixes (MA-L)

KOKUSAI DENKI Electric Inc. holds two IEEE MA-L blocks, 00:03:46 and 00:40:31, both registered to the same Kodaira-shi, Tokyo address. The company traces its lineage to the broadcast and video-camera division of Hitachi Kokusai Electric, and now operates under the Kokusai Denki name following Nisshinbo Holdings taking majority ownership — a lineage worth flagging carefully because it is easy to confuse with the separately-listed Kokusai Electric Corporation, a semiconductor deposition-equipment maker that shares the same Hitachi Kokusai ancestry but is a distinct company. KOKUSAI DENKI ships broadcast and production UHD-HDTV cameras, digital microwave transmission links, HD-SDI security/CCTV cameras under the ISnex brand, industrial machine-vision cameras, and financial/stock-exchange information systems — all plausible categories for networked, Ethernet-capable hardware consistent with holding its own OUI blocks rather than being a bare registration. The company maintains active regional entities in Japan, the United States, and Europe. Under the predecessor Hitachi Kokusai Electric name, the ISnex network camera/encoder/decoder line was the subject of a vendor-published November 2022 security advisory disclosing two vulnerabilities — CVE-2022-37680 (authentication bypass) and CVE-2022-37681 (directory traversal/file disclosure) — across several named models, tying the OUI concretely to real, currently-documented networked security hardware.

Organization / IEEE assignment

KOKUSAI DENKI Electric Inc., two MA-L blocks (00:03:46, 00:40:31), registered address 32 Miyuki-cho, Kodaira-shi, Tokyo, JP [Confirmed] — the IEEE MA-L registry, the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI) x2; no MA-M or MA-S blocks found for this organization [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

Allocated date

Unknown — IEEE's public OUI data publishes no assignment/registration date; maclookup.app shows "registered 2000-11-09" for both prefixes but this is a third-party database artifact, not an IEEE-published fact, and is not treated as one here

[Confirmed caveat, date left null] — https://maclookup.app/vendors/kokusai-denki-electric-inc

Company background

former broadcast/video-camera division of Hitachi Kokusai Electric; now operates as KOKUSAI DENKI under Nisshinbo Holdings' majority ownership, distinct from the unrelated Kokusai Electric Corporation (semiconductor deposition-equipment maker, TSE-listed 2023, also ex-Hitachi Kokusai lineage)

[Likely] — https://www.kokusaidenki.co.jp/global/en/index.html, https://en.wikipedia.org/wiki/Kokusai_Electric

Regional entities

Japan HQ (kokusaidenki.co.jp), Kokusai Denki America (kokusaidenki.us), KOKUSAI DENKI Electric Europe GmbH (kokusaidenki.eu) [Confirmed] — https://kokusaidenki.us/, https://www.kokusaidenki.eu/, https://www.mpts.london/exhibitors/kokusai

Products / device types

broadcast/production UHD-HDTV cameras, digital microwave transmission links, HD-SDI CCTV cameras (ISnex line), industrial machine-vision cameras, financial/stock-exchange information systems [Confirmed] — https://www.kokusaidenki.co.jp/global/en/index.html, https://kokusaidenki.us/

Security history

predecessor-name (Hitachi Kokusai Electric) ISnex network camera/encoder/decoder line — CVE-2022-37680 (authentication bypass) and CVE-2022-37681 (directory traversal/file disclosure), disclosed November 2022 across named models (HC-IP41HD, HC-IP250HDA, HC-IP267HD, HC-IP277HD, HC-IP400HD, VG-IP2000, PT-IP2500R) [Confirmed] — https://www.hitachi-kokusai.co.jp/global/en/products/info/vulnerable/hitachi-sec-2022-001/, https://www.cybersecurity-help.cz/vdb/SB2022111406, https://jvn.jp/en/report/all.html

Related-but-distinct orgs (do not conflate)

KDD-KOKUSAI DENSHIN DENWA CO. (08:00:1C, different company); KOKUSAI ELECTRIC CORPORATION (38:77:CD, distinct successor entity); NEXT NETS CORPORATION (00:D0:F7, address contains "MITA KOKUSAI BLDG." — building-name coincidence, unrelated org); TECHTUIT CO.,LTD. (MA-S block, address contains "MITA KOKUSAIBLDG" — coincidence, unrelated org)

[Confirmed] — the IEEE MA-L registry, the IEEE MA-L registry, the IEEE MA-L registry, the IEEE MA-S registry

IEEE direct verification

not obtained this cycle — standards-oui.ieee.org/oui/oui.csv returned HTTP 418 to the automated fetch; relied on the internal registry CSV cache plus cross-corroborating third-party lookups (maclookup.app, api.macvendors.com) instead [Confirmed] — https://maclookup.app/vendors/kokusai-denki-electric-inc, https://api.macvendors.com/00:03:46, https://api.macvendors.com/00:40:31

Company substance verdict

substantive — two confirmed OUI blocks, multi-region corporate presence, identifiable networked product lines, and a vendor-published CVE advisory under the predecessor name, clearing the single-OUI-shell abstention bar [Confirmed]